Labour MP and a Twitter riddle over the 'scum-sucking pig' insult to Tories

Apology: David Wright was accused of calling Conservatives of being 'scum-sucking pigs'

A Labour whip was forced to apologise last night after apparently branding Conservatives 'scum-sucking pigs'.

David Wright was accused of using the insult on the social networking site Twitter. But the Shropshire MP said his message had been hijacked and the 'scum-sucking' phrase added.

He enraged Tories with an explanation of why he had never voted for their party - one of the most popular discussion topics on Twitter yesterday following the launch of a fresh Conservative poster campaign.

His message read: 'I've never voted Tory because you can put lipstick on a scum-sucking pig, but it's still a scum-sucking pig. And cos they would ruin Britain.'

Mr Wright was forced to delete his post and apologise following angry responses.

He later wrote: 'Think you'll find the pig is the Tory Party not Tory voters. But fair does, apology in the ether.'